De Vries gave his mutation theory on organic evolution while working on:
1. Oenothera lamarckiana
2. Drosophila melanogaster
3. Pisum sativum
4. Althea rosea
Species separated by geographical barriers are called:
1. Allopatric
2. Sympatric
3. Sibling
4. Endemic
Age of Dryopithecous is estimated to be:
1. 2.46 crore years
2. 2.46 lakh year
3. 1 lakh year
4. 1 crore year
Which of the following statement is true:
1. Homo erectus is direct ancestor of Homo sapiens
2. Neanderthal man is direct ancestor of modern man
3. Australopithecous is direct ancestor of modern man
4. Fossils of cromagnon man first found in Ethiopia
Evolution of heart from one to two, three and four chambered proves:
1. Biogenetic law of Haeckel
2. Lamarckism
3. Hardy weinberg's law
4. Neo Darwinism
Genetic drift mainly takes place in:
1. Small population
2. Large population
3. Oceanic population
4. Never occurs
In present times, the origin of life is not possible from inorganic compounds due to:
1. Non-availability of raw material
2. High concentration of O2 in the atmosphere
3. Decrease in temperature
4. Excess of pollution
On Galapagos island, Darwin observed variation in beaks of birds (Darwin's finches) and he concluded:
1. Inter species variation
2. Intraspecies variation
3. Natural selection according to food
4. Inheritance of acquired characters
Two opposite forces operate in the growth and development of every population. One of them is related to the ability to reproduce at a given rate. The force opposite to it is called:
1. Fecundity
2. Environmental resistances
3. Biotic control
4. Mortality
The age of fossils in the past was generally determined by the radio-carbon method and other methods involving radioactive elements found in the rocks. More precise methods, which were used recently and led to the revision of the evolutionary periods for different groups of organisms include:
1. Study of the conditions of fossilization
2. Electron spin resonance (ESR) & fossil DNA
3. Study of carbohydrates/proteins in rocks
4. Study of carbohydrates/proteins in fossils